APA (7th ed.) Citation

Ries, H. (1930). Elementary economic geology. J. Wiley & sons, inc. Chapman & Hall, limited.

Chicago Style (17th ed.) Citation

Ries, Heinrich. Elementary Economic Geology. New York, London: J. Wiley & sons, inc. Chapman & Hall, limited, 1930.

MLA (9th ed.) Citation

Ries, Heinrich. Elementary Economic Geology. J. Wiley & sons, inc. Chapman & Hall, limited, 1930.